Superior communication in a compact package, our 403mc is the smallest 4- place, voice-activated panel mount in the general aviation market. Installs virtually anywhere in the panel for efficient use of limited space. *Pilot isolate *Adjustable volume and squelch controls *Two position transmit capability *Auxiliary input for music or alerts *Includes mic and phone jacks *2.65″long x 2.375″ wide x 1″ high *Rectangular faceplate can be mounted horizontally or vertically *2-year warranty.